package chapter10;

/**
 * @author lzy
 * @version v1.0
 * Create DateTime: 2019/1/15 22:04
 */
public class NullBook implements IBook {
    public NullBook() {

    }

    public NullBook(String title, double price) {

    }

    @Override
    public String getTitle() {
        return null;
    }

    @Override
    public void setTitle(String title) {

    }

    @Override
    public double getPrice() {
        return 0;
    }

    @Override
    public void setPrice(double price) {

    }
}
